Ok, I know this would normally go in teh tech section, but figured not too many Soldano users would chekc over there and I know tubes cats check out here, so any opinions or thoughts are welcomed. I have a HotRod100+ I tubed with JJ 6l6gc's and have it tweaked right in, sounding damn near perfect. I picked up a used SLO today with the Ruby 5881's in it. I know, two different amps. The SLO is already smoother and fatter than the HR100. My question, I want to retube the SLO. If I throw in 6l6GC, wouldn't it make it fatter and rounder on the lows? So two-fold ? here... (let's talk new production first) 6l6gc compared to 5881. What differences? Imagine I would choose between JJ (what I usually use), TAD (if they even make them?), and the Tung Sol. What are the actual differences in tone genenrally between 6l6gc and 5881? Then between the new production actual companies (TS, JJ, TAD)? What about NOS like the JAN Philips 6l6wgb? Not good to handle the hooter pv on the Soldano stuff? Liek i say, it is currently sounding better than my HR tweake din with choice preamp tubes, etc! So if I cna get it even better, wow! Creamier and I always love lows and smooth highs. Mainly Hard Blues, lots of classic Rock. Thanks for any help!